A wheel hub chuck

Abstract

This utility model relates to the field of chuck technology, specifically to a wheel hub chuck, comprising a chuck body with jaws, the jaws being fixedly mounted on a base, the inner sidewall of the base being connected to two rotating blocks A via a rotating structure, the inner sidewall of rotating block A being connected to two rotating blocks B via a rotating structure, and the sidewall of rotating block B being connected to two rotating blocks C via a rotating structure. The rotating structure includes arc-shaped grooves formed in the base, rotating blocks A and B, and arc-shaped sliders being mounted in the arc-shaped grooves via a sliding structure. The three arc-shaped sliders are fixedly connected to rotating blocks A, B and C respectively. Limiting grooves are formed in the sidewalls of the base, rotating blocks A and B, and rotating blocks A, B and C are respectively threaded with screws. This wheel hub chuck can accommodate wheel hubs of different sizes, increases the contact area with the wheel hub, evenly distributes the clamping force to the wheel hub surface, reduces stress concentration, and prevents wheel hub deformation.

Description

Technical Field

[0001] This utility model relates to the field of chuck technology, specifically to a wheel hub chuck. Background Technology

[0002] A chuck is a mechanical device used on machine tools to clamp workpieces. It's a machine tool accessory that uses the radial movement of movable jaws evenly distributed on the chuck body to clamp and position the workpiece. A chuck generally consists of three parts: the chuck body, the jaws, and the jaw drive mechanism. The chuck body diameter ranges from a minimum of 65 mm to a maximum of 1500 mm, with a central through-hole to allow the workpiece or bar stock to pass through; the back has a cylindrical or short conical structure, which connects directly or via a flange to the end of the machine tool spindle. Chucks are commonly used on lathes, external cylindrical grinding machines, and internal cylindrical grinding machines, and can also be used with various indexing devices on milling machines and drilling machines.

[0003] Chinese utility model patent application number CN202420869790.6—Chuck device for light alloy wheels—comprises a base, a clamping unit, and a positioning unit; the base is cylindrical; the positioning unit is fixedly installed at the top center of the base; the clamping unit includes a motor, a turntable, and multiple clamping components; the base has an internal mounting cavity, and the turntable is rotatably mounted within the mounting cavity; the motor is fixed to the base; the motor's output shaft extends into the mounting cavity and is connected to the turntable for transmission; the multiple clamping components are arranged in a circumferential array around the axis of the turntable.

[0004] This patent fixes the wheel hub by applying radial pressure to the outer edge of the hub. However, due to the fixed shape of the clamping block, the contact area is too small when clamping wheel hubs of different sizes, which causes the wheel hub to be subjected to concentrated force, easily causing the wheel hub to deform and affecting the wheel hub processing quality. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wheel hub chuck. The problem it solves is that when clamping wheel hubs of different sizes, the inability to adjust the contact area leads to concentrated force on the wheel hub, easily causing deformation and affecting the wheel hub processing quality. The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A wheel hub chuck includes a chuck body with jaws, characterized in that the jaws are provided with:

[0007] The base is connected to the claws;

[0008] Two rotating blocks A are connected to the side wall of the base through the rotating structure.

[0009] Two rotating blocks B are connected to the sidewall of rotating block A via a rotating structure.

[0010] Two rotating blocks C are connected to the sidewall of rotating block B via a rotating structure.

[0011] The rotating structure includes an arc-shaped groove, and an arc-shaped slider is provided in the arc-shaped groove in a sliding manner;

[0012] Limiting grooves are formed on the side walls of the base, rotating block A, and rotating block B;

[0013] The screws are connected to rotating blocks A, B and C by threads, with one end of the screw extending into the limiting groove.

[0014] Furthermore, the base is connected to the claws in a fixed manner.

[0015] Furthermore, the vertical cross-section of the arc-shaped slider is set in a T-shape, the arc-shaped slider is adapted to the arc-shaped groove, and the two ends of the arc-shaped groove are connected to the base, the side walls of rotating block A and rotating block B.

[0016] Furthermore, arc-shaped grooves are provided on the side walls of the base, rotating block A, and rotating block B;

[0017] The arc-shaped groove is formed circumferentially on the circumferential wall of the arc-shaped groove;

[0018] The limiting groove is formed circumferentially on the circumferential wall of the arc-shaped slide.

[0019] Furthermore, the screw is a countersunk hexagonal head screw.

[0020] Furthermore, the base is connected to the claw via a hinged structure.

[0021] Furthermore, the hinge structure includes a hinge seat A fixedly connected to the claw, and a hinge seat B is connected to the hinge seat A via a pivot. The hinge seat B is fixedly connected to the base.

[0022] Furthermore, the angle between the rotating block C and the vertical plane is A, and the maximum angle of A is 5°.

[0023] The beneficial effects of this utility model are as follows: By setting a rotating block A on the base through a rotating structure, rotating block B is rotatably set on rotating block A, and rotating block C is rotatably set on rotating block B, which can meet the clamping of wheel hubs of different sizes, increase the contact area with the wheel hub, and make the clamping force evenly distributed on the surface of the wheel hub, reduce stress concentration, and prevent wheel hub deformation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is an exploded view of the components on the chuck of this utility model;

[0026] Figure 3This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0027] Figure 4 This is a schematic diagram of the main structure of Embodiment 2 of this utility model, showing the removal of the chuck body and chuck claws.

[0028] In the picture:

[0029] 1. Chuck body, 2. Base, 3. Rotary block A, 4. Rotary block B, 5. Rotary block C, 6. Arc-shaped slide groove, 7. Arc-shaped slider, 8. Limiting groove, 9. Screw, 10. Arc-shaped groove, 11. Hinge seat A, 12. Hinge seat B. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0031] Example 1: A hub chuck includes a chuck body 1 with jaws. The jaws are fixedly mounted on a base 2. Two rotating blocks A3 are connected to the inner sidewall of the base 2 via a rotating structure. Two rotating blocks B4 are connected to the inner sidewall of rotating blocks A3 via the same rotating structure. Two rotating blocks C5 are connected to the sidewall of rotating blocks B4 via a rotating structure. The rotating structure includes arc-shaped grooves 6 formed in the base 2, rotating blocks A3, and rotating blocks B4. Arc-shaped sliders 7 are slidably mounted within the arc-shaped grooves 6. The three arc-shaped sliders 7 are respectively connected to the rotating blocks... A3, rotating block B4, and rotating block C5 are fixedly connected. Limiting grooves 8 are provided on the side walls of base 2, rotating block A3, and rotating block B4. Rotating blocks A3, B4, and C5 are respectively connected to screws 9 by threads. One end of the screw 9 extends into the limiting groove 8 to prevent base 2 from separating from rotating block A3, rotating block A3 from rotating block B4, and rotating block B4 from rotating block C5 in the circumferential direction. This type of wheel hub chuck can meet the clamping requirements of wheel hubs of different sizes, increases the contact area with the wheel hub, and evenly distributes the clamping force to the surface of the wheel hub, reduces stress concentration, and prevents wheel hub deformation.

[0032] Specifically, the vertical cross-section of the arc-shaped slider 7 is T-shaped, and the shape of the arc-shaped slider 7 is adapted to the arc-shaped slide groove 6. The two ends of the arc-shaped slide groove 6 are connected to the side walls of the base 2, rotating block A3, and rotating block B4, which facilitates installation and improves the rotation range.

[0033] It should be noted that the base 2, rotating block A3, and rotating block B4 all have arc-shaped grooves 10 on their side walls to fit against the side walls of rotating block A3, rotating block B4, and rotating block C5. The arc-shaped sliding groove 6 is formed on the circumferential wall of the arc-shaped groove 10, and the limiting groove 8 is formed on the circumferential wall of the arc-shaped sliding groove 6.

[0034] It should be noted that screw 9 is a countersunk hex head screw, which is convenient for installation.

[0035] In Example 2, to facilitate better contact with the inclined surface of the wheel hub, the base 2 is connected to the pawl via a hinge structure. Specifically, the hinge structure includes a hinge seat A11 fixedly connected to the pawl, and a hinge seat B12 connected to the hinge seat A11 via a rotating shaft. The hinge seat B12 is fixedly connected to the base 2. The hinge seat A11 is a triangular prism structure, and the hinge seat B12 is a quadrangular frustum structure. The inclined surfaces of the two structures are used to limit rotation. The angle between the rotating block C5 and the vertical plane is A, and the angle A ranges from 0° to 5°. In this example, it is 2°, which is used to ensure that the rotating block C5 is in contact with the inclined surface of the wheel hub.

[0036] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A wheel hub chuck comprising a chuck body (1) with jaws, characterized in that, The chuck is equipped with: Base (2), base (2) is connected to the claw; The two rotating blocks A (3) are connected to the side wall of the base (2) through the rotating structure. Rotating block B(4), the two rotating blocks B(4) are respectively connected to the side wall of rotating block A(3) through a rotating structure; Rotating block C(5), the two rotating blocks C(5) are respectively connected to the side wall of rotating block B(4) through a rotating structure; The rotating structure includes an arc-shaped groove (6), and an arc-shaped slider (7) is provided in the arc-shaped groove (6) in a sliding structure manner. Limiting groove (8) is provided on the side wall of base (2), rotating block A (3) and rotating block B (4); Screw (9) is connected to rotating block A (3), rotating block B (4) and rotating block C (5) respectively by threads, and one end of screw (9) extends into the limiting groove (8).

2. A wheel hub cartridge according to claim 1, wherein: The base (2) is connected to the claw by a fixing method.

3. A wheel hub cartridge according to claim 2, wherein: The vertical cross section of the arc-shaped slider (7) is set in a T-shaped structure. The arc-shaped slider (7) is adapted to the arc-shaped slide groove (6). The two ends of the arc-shaped slide groove (6) are connected to the side walls of the base (2), rotating block A (3), and rotating block B (4).

4. A hub chuck according to claim 3, characterized in that: Arc-shaped grooves (10) are opened on the side walls of the base (2), rotating block A (3), and rotating block B (4); The arc-shaped groove (6) is formed circumferentially on the circumferential wall of the arc-shaped groove (10); The limiting groove (8) is opened along the circumferential direction on the circumferential wall of the arc-shaped slide groove (6).

5. A wheel hub cartridge according to claim 1, wherein: Screw (9) is a countersunk hexagonal screw.

6. A wheel hub cartridge according to claim 1, wherein: The base (2) is connected to the claws via a hinged structure.

7. A wheel hub cartridge according to claim 6, wherein: The hinge structure includes a hinge seat A (11) fixedly connected to the claw, and a hinge seat B (12) is provided on the hinge seat A (11) through a rotating shaft. The hinge seat B (12) is connected to the base (2) in a fixed structure manner.

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